Database : MEDLINE
Search on : air [Words]
References found : 308436 [refine]
Displaying: 1 .. 10   in format [Detailed]

page 1 of 30844 go to page                         

  1 / 308436 MEDLINE  
              next record last record
select
to print
Photocopy

[PMID]: 28777521
[Au] Autor:Cable R; Weaver LK; Roberts AB; Goodman G; Deru K
[Ad] Address:Division of Hyperbaric Medicine, Intermountain Medical Center, Murray, Utah and Intermountain LDS Hospital, Salt Lake City, Utah U.S.
[Ti] Title:Blue-fingered diver: case report.
[So] Source:Undersea Hyperb Med;43(7):835-840, 2016 Nov-Dec.
[Is] ISSN:1066-2936
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Although Raynaud's phenomenon is a well-known consequence of exposure to cold, neither its incidence in recreational divers nor case reports in that population have been reported in the medical literature. We present a case report of the initial manifestation of primary Raynaud's phenomenon during a warm-water scuba dive. A healthy 18-year-old Caucasian male made four open-circuit compressed air scuba dives over two days in the Florida Keys to a maximum depth of 90 feet. After two of those dives, he noted painless, blue discoloration on three digits of his left hand, unaccompanied by sensory changes, which resolved within an hour of surfacing. During a fitness-to-dive evaluation one week later, his physical examination was normal. No skin discoloration, neurological symptoms or changes to pulse or blood pressure were noted with temperature or positional provocation. Laboratory testing was normal. However, arterial Doppler measurements were severely diminished in all digits of both upper extremities with temperature provocation, and continued to be diminished five minutes after immersion, suggesting Raynaud's phenomenon.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170804
[Lr] Last revision date:170804
[St] Status:In-Process

  2 / 308436 MEDLINE  
              first record previous record next record last record
select
to print
Photocopy

[PMID]: 28777518
[Au] Autor:Eichhorn L; Nietzel C; Schröder S; Siekmann U; Koch A; Weber S
[Ad] Address:Department of Anaesthesiology and Intensive Care Medicine, University Hospital of Bonn, Germany.
[Ti] Title:A single air dive induces apoptotic gene regulation but no increase in nucleosomes.
[So] Source:Undersea Hyperb Med;43(7):813-819, 2016 Nov-Dec.
[Is] ISSN:1066-2936
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:BACKGROUND: Oxidative stress caused by elevated partial pressure of oxygen during diving is a major contributor of inflammation and apoptosis. The underlying molecular mechanisms are poorly understood. The aim of the study was to describe apoptotic gene regulation induced by a single air dive. METHODS: 19 healthy volunteers were exposed to a 30-minute dive at 2.8 atmospheres (ATA) absolute in a pressure chamber in ambient air. Blood samples were obtained before, directly after and 24 hours after exposure. Gene expressions of Bcl-2, Bcl-xL and Bax were analyzed in mononuclear cell extracts by real-time polymerase chain reaction (PCR). Circulating nucleosomes were measured in serum before exposure and 24 hours afterward. RESULTS: The pro-apoptotic Bax expression was not significantly increased (p=0.74) directly after the dive but was induced (2.22 ± 0.85-fold) after 24 hours (p ≤ 0.01). Bcl-2 expression was not changed significantly directly after (p = 0.11) but was 1.88 ± 1.08-fold higher after 24 hours (p ≤ 0.01). Bcl-xL expression was not elevated significantly (p = 0.54) but was 2.04 ± 1.02-fold higher after 24 hours (p ≤ 0.01). The level of nucleosomes did not change after 24 hours compared to baseline. CONCLUSION: A single air dive at 2.8 ATA for 30 minutes causes an upregulation of pro- and anti-apoptotic genes but did not elevate circulating nucleosomes. In a single air dive the upregulation of anti-apoptotic Bcl-2 family members may counteract the pro-apoptotic potential of Bax.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170804
[Lr] Last revision date:170804
[St] Status:In-Process

  3 / 308436 MEDLINE  
              first record previous record next record last record
select
to print
Photocopy
Full text

[PMID]: 28777305
[Au] Autor:Collins S; Walker J
[Ad] Address:Public Health England, Salisbury SP4 0JG, UK. Samuel.collins@phe.gov.uk.
[Ti] Title:Comment on Montagna, et al. Evaluation of Legionella air contamination in healthcare facilities by different sampling methods: An Italian multicenter study. Int. J. Environ. Res. Public Health 2017, 14, 670.
[So] Source:Int J Environ Res Public Health;14(8), 2017 Aug 04.
[Is] ISSN:1660-4601
[Cp] Country of publication:Switzerland
[La] Language:eng
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170804
[Lr] Last revision date:170804
[St] Status:In-Data-Review

  4 / 308436 MEDLINE  
              first record previous record next record last record
select
to print
Photocopy
Full text

[PMID]: 28777221
[Au] Autor:Itikawa EN; Santos LA; Trevisan AC; Pitella FA; Kato M; Moraes ER; Wichert-Ana L
[Ad] Address:aSection of Nuclear Medicine, Department of Internal Medicine, Ribeirão Preto Medical School bDepartment of Physics, Ribeirão Preto School of Philosophy, Sciences and Literature, University of São Paulo cInterunits Post-Graduation Program on Bioengineering, São Carlos School of Engineering, University of São Paulo, São Carlos, Brazil.
[Ti] Title:Characterization of resolution, sensitivity, and shielding of a gamma-probe for sentinel lymph node localization: an experimental study.
[So] Source:Nucl Med Commun;, 2017 Aug 03.
[Is] ISSN:1473-5628
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:OBJECTIVE: The aim of this study was to evaluate angular, spatial, and energy resolution, sensitivity, and shielding of a gamma-probe. MATERIALS AND METHODS: The EUROPROBE II gamma-probe (EuroRad) with sources of technetium-99m was assessed according to NEMA NU-3-2004. Resolution tests were evaluated considering the full width at half maximum (FWHM). The following parameters were evaluated: angular resolution in air, spatial resolution with a scattering medium and in air, energy resolution, and sensitivity and shielding. The collimator was used to evaluate angular and spatial resolution, sensitivity, and shielding. Background radiation was considered and did not affect the counts. RESULTS: FWHM of angular resolution (at 3/30 cm) was 39.17°/33.13° with the collimator and 74.08°/71.51° without the collimator; FWHM of spatial resolution in air at 10 mm was 13.32 mm with the collimator and 21.23 mm without the collimator. Energy resolution (%FWHM) was 20.51%. Sensitivity at 10 mm was 4.642±5 cps/MBq without the collimator and 1.063±2 cps/MBq with the collimator; shielding effectiveness of the probe tip was 99.52%. Background was not relevant to the counts. CONCLUSION: We showed that the collimator improved angular and spatial resolution to the detriment of sensitivity. Feasible results of energy resolution, sensitivity, and shielding were achieved.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170804
[Lr] Last revision date:170804
[St] Status:Publisher
[do] DOI:10.1097/MNM.0000000000000725

  5 / 308436 MEDLINE  
              first record previous record next record last record
select
to print
Photocopy
Full text

[PMID]: 28777099
[Au] Autor:van der Sloot KWJ; Amini M; Peters V; Dijkstra G; Alizadeh BZ
[Ad] Address:Departments of *Epidemiology, and †Gastroenterology and Hepatology, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands.
[Ti] Title:Inflammatory Bowel Diseases: Review of Known Environmental Protective and Risk Factors Involved.
[So] Source:Inflamm Bowel Dis;, 2017 Aug 02.
[Is] ISSN:1536-4844
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Inflammatory bowel diseases consisting of Crohn's disease and ulcerative colitis are chronic inflammatory diseases of the gastrointestinal tract. In addition to genetic susceptibility and disturbances of the microbiome, environmental exposures forming the exposome play an important role. Starting at birth, the cumulative effect of different environmental exposures combined with a predetermined genetic susceptibility is thought to cause inflammatory bowel disease. All these environmental factors are part of a Western lifestyle, suiting the high incidence rates in Europe and the United States. Whereas receiving breastfeeding, evidence of a Helicobacter pylori infection and vitamin D are important protective factors in Crohn's disease as well as ulcerative colitis, increased hygiene, experiencing a bacterial gastroenteritis in the past, urban living surroundings, air pollution, the use of antibiotics, nonsteroidal anti-inflammatory drugs, and oral contraceptives are likely to be the most important risk factors for both diseases. Current cigarette smoking yields a divergent effect by protecting against ulcerative colitis but increasing risk of Crohn's disease, whereas former smoking increases chances of both diseases. This review gives a clear overview of the current state of knowledge concerning the exposome. Future studies should focus on measuring this exposome yielding the possibility of combining all involved factors to one exposome risk score and our knowledge on genetic susceptibility.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170804
[Lr] Last revision date:170804
[St] Status:Publisher
[do] DOI:10.1097/MIB.0000000000001217

  6 / 308436 MEDLINE  
              first record previous record next record last record
select
to print
Photocopy
Full text

[PMID]: 28777001
[Au] Autor:Rojas AJ; Pentelute BL; Buchwald SL
[Ad] Address:Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States.
[Ti] Title:Water-Soluble Palladium Reagents for Cysteine S-Arylation under Ambient Aqueous Conditions.
[So] Source:Org Lett;, 2017 Aug 04.
[Is] ISSN:1523-7052
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:We report the use of a sulfonated biarylphosphine ligand (sSPhos) to promote the chemoselective modification of cysteine containing proteins and peptides with palladium reagents in aqueous medium. The use of sSPhos allowed for the isolation of several air-stable and water-soluble mono- and bis-palladium reagents, which were used in an improved protocol for the rapid S-arylation of cysteines under benign and physiologically relevant conditions. The cosolvent-free aqueous conditions were applied to the conjugation of a variety of biomolecules with affinity tags, heterocycles, fluorophores, and functional handles. Additionally, bis-palladium reagents were used to perform macrocyclization of peptides bearing two cysteine residues.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170804
[Lr] Last revision date:170804
[St] Status:Publisher
[do] DOI:10.1021/acs.orglett.7b01911

  7 / 308436 MEDLINE  
              first record previous record next record last record
select
to print
Photocopy
Full text

[PMID]: 28776929
[Au] Autor:Gerstner GR; Ryan ED; Kleinberg CR; Tweedell AJ; Smith-Ryan AE
[Ad] Address:Neuromuscular Research Laboratory, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
[Ti] Title:Consistency of a mobile body composition trailer: a novel portable laboratory assessment?
[So] Source:Clin Physiol Funct Imaging;37(5):544-547, 2017 Sep.
[Is] ISSN:1475-097X
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:OBJECTIVE: The purpose of this investigation was to (i) assess the test-retest reliability and minimum difference (MD) values of air-displacement plethysmography (ADP) and the Siri 3-compartment (3-C) model in a mobile trailer, and (ii) identify any environmental fluctuations in the trailer. METHODS: percent body fat (%BF) was examined in 22 firefighters on two separate days in a climate-controlled mobile trailer using ADP. Total body water was examined in a subset of participants (n = 12) using bioelectrical impedance spectroscopy (BIS) to determine %BF using Siri's 3-C model. RESULTS: There were no differences in environmental measures (P≥0·138), %BF for ADP (P = 0·276), or %BF for the Siri 3-C model (P = 0·382) between day 1 and day 2. Intraclass correlation coefficient and standard error of measurement values for ADP and the Siri 3-C model were 0·978 and 1·3% and 0·986 and 0·6%, respectively. The MD values were 3·6% and 1·7%, respectively. CONCLUSIONS: These findings indicate that ADP can reliably determine %BF when transported in a climate-controlled mobile trailer. Additional accuracy is achievable with the Siri 3-C model, providing an attractive and promising method to measure body composition in larger scale community-based settings.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170804
[Lr] Last revision date:170804
[St] Status:In-Process
[do] DOI:10.1111/cpf.12340

  8 / 308436 MEDLINE  
              first record previous record next record last record
select
to print
Photocopy
Full text

[PMID]: 28776754
[Au] Autor:Ma YJ; Tadros A; Du J; Chang EY
[Ad] Address:Department of Radiology, University of California, San Diego, San Diego, California, USA.
[Ti] Title:Quantitative two-dimensional ultrashort echo time magnetization transfer (2D UTE-MT) imaging of cortical bone.
[So] Source:Magn Reson Med;, 2017 Aug 03.
[Is] ISSN:1522-2594
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:PURPOSE: To investigate quantitative 2D ultrashort echo time magnetization transfer (UTE-MT) imaging in ex vivo bovine cortical bone and in vivo human tibial cortical bone. METHODS: Data were acquired from five fresh bovine cortical bone samples and five healthy volunteer tibial cortical bones using a 2D UTE-MT sequence on a clinical 3T scanner. The 2D UTE-MT sequence used four or five MT powers with five frequency offsets. Results were analyzed with a two-pool quantitative MT model, providing measurements of macromolecular fraction (f), macromolecular proton transverse relaxation times (T ), proton exchange rates from water/macromolecular to the macromolecular/water pool (RM /RM ), and spin-lattice relaxation rate of water pool (R ). A sequential air-drying study for a small bovine cortical bone chip was used to investigate whether above MT modeling parameters were sensitive to the water loss. RESULTS: Mean fresh bovine cortical bone values for f, T , R , RM , and RM were 59.9 ± 7.3%, 14.6 ± 0.3 µs, 9.9 ± 2.4 s , 17.9 ± 3.6 s , and 11.8 ± 2.0 s , respectively. Mean in vivo human cortical bone values for f, T , R , RM and RM were 54.5 ± 4.9%, 15.4 ± 0.6 µs, 8.9 ± 1.1 s , 11.5 ± 3.5 s , and 9.5 ± 1.9 s , respectively. The sequential air-drying study shows that f, RM , and R were increased with longer drying time. CONCLUSION: UTE-MT two-pool modeling provides novel and useful quantitative information for cortical bone. Magn Reson Med, 2017. © 2017 International Society for Magnetic Resonance in Medicine.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170804
[Lr] Last revision date:170804
[St] Status:Publisher
[do] DOI:10.1002/mrm.26846

  9 / 308436 MEDLINE  
              first record previous record next record last record
select
to print
Photocopy
Full text

[PMID]: 28776716
[Au] Autor:Jiang Y; Veromann-Jürgenson LL; Ye J; Niinemets Ü
[Ad] Address:Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, Tartu, 51014, Estonia.
[Ti] Title:Oak gall wasp infections of Quercus robur leaves lead to profound modifications in foliage photosynthetic and volatile emission characteristics.
[So] Source:Plant Cell Environ;, 2017 Aug 04.
[Is] ISSN:1365-3040
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Oak trees (Quercus) are hosts of diverse gall-inducing parasites, but the effects of gall formation on the physiology and biochemistry on host oak leaves is poorly understood. The influence of infection by four species from two widespread gall wasp genera, Neuroterus (N. anthracinus and N. albipes) and Cynips (C. divisa and C. quercusfolii), on foliage morphology, chemistry, photosynthetic characteristics, constitutive isoprene and induced volatile emissions in Q. robur was investigated. Leaf dry mass per unit area (M ), net assimilation rate per area (A ), stomatal conductance (g ), and constitutive isoprene emissions decreased with the severity of infection by all gall wasp species. The reduction in A was mainly determined by reduced M and to a lower extent by lower content of leaf N and P in gall-infected leaves. The emissions of lipoxygenase pathway (LOX) volatiles increased strongly with increasing infection severity for all four species with the strongest emissions in major vein associated species, N. anthracinus. Mono- and sesquiterpene emissions were strongly elicited in N. albipes and Cynips species, except in N. anthracinus. These results provide valuable information for diagnosing oak infections using ambient air volatile fingerprints and for predicting the impacts of infections on photosynthetic productivity and whole tree performance.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170804
[Lr] Last revision date:170804
[St] Status:Publisher
[do] DOI:10.1111/pce.13050

  10 / 308436 MEDLINE  
              first record previous record
select
to print
Photocopy
Full text

[PMID]: 28776683
[Au] Autor:Leirão IP; Silva CA; Gargaglioni LH; da Silva GSF
[Ad] Address:Department of Animal Morphology and Physiology, College of Agricultural and Veterinary Sciences, São Paulo State University (FCAV-UNESP), Jaboticabal, SP, Brazil.
[Ti] Title:Hypercapnia-induced active expiration increases in sleep and enhances ventilation in unanaesthetized rats.
[So] Source:J Physiol;, 2017 Aug 03.
[Is] ISSN:1469-7793
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Expiration is passive at rest but becomes active through recruitment of abdominal muscles under increased respiratory drive. Hypercapnia-induced active expiration has not been well explored in unanaesthetized rats. We hypothesized that (i) CO -evoked active expiration is recruited in a state-dependent manner i.e. differently in sleep or wakefulness and (ii) that recruitment of active expiration enhances ventilation, hence having an important functional role in meeting metabolic demand. To test these hypotheses Wistar rats (280-330 g) were implanted with electrodes for electroencephalography (EEG) and electromyography (EMG) of the neck, diaphragm (DIA) and abdominal (ABD) muscles. Active expiratory events were considered as rhythmic ABD activity interposed to DIA . Animals were exposed to room air followed by hypercapnia (7% CO ) with EEG, EMG and ventilation (V̇ ) recorded throughout the experimental protocol. No active expiration was observed during room air exposure. During hypercapnia, CO -evoked active expiration was predominantly recruited during non-REM sleep. Its increased occurrence during sleep was evidenced by the decreased DIA-to-ADB ratio (1:1 ratio means that each DIA event is followed by an ABD event, indicating a high occurrence of ABD activity). Moreover, V̇ was also enhanced (P < 0.05) in periods with active expiration. V̇ had a positive correlation (P < 0.05) with the peak amplitude of ABD activity. The data strongly demonstrate that hypercapnia-induced active expiration increases during sleep and provide an important functional role to support V̇ in conditions of increased respiratory demand. This article is protected by copyright. All rights reserved.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1708
[Cu] Class update date: 170804
[Lr] Last revision date:170804
[St] Status:Publisher
[do] DOI:10.1113/JP274726


page 1 of 30844 go to page                         
   


Refine the search
  Database : MEDLINE Advanced form   

    Search in field  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/PAHO/WHO - Latin American and Caribbean Center on Health Sciences Information